Supply and Pre-Treatment Abstracts
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Techniques for Manufacturing Artificial Seawater
Bart Shepherd, California Academy of Sciences Watch Video (Login required) Full Abstract
No abstract |
Reverse Osmosis - The Fundamental Pursuit for Balance
Joel Johnson, TJP Engineering, Inc Watch Video (Login required) . Full Abstract
Reverse Osmosis (RO) is a membrane filtration process used to separate small and dissolved impurities from water. RO processes are suitable for many aquatic animal life support system purposes. Performance of an RO membrane is affected by numerous operational conditions. Examples of applications for reverse osmosis include desalination of water, removal of impurities in incoming fresh water, pre-treatment for water for seawater manufacture, softening of water for freshwater aquarium use, and removal of rainwater from outdoor seawater exhibits with strict environmental discharge requirements. Domestic RO systems are significantly less expensive and require much less energy than their commercial counterparts. Domestic RO systems are suitable for aquatic animal life support applications, which have lower production requirements than many municipal authorities require for commercial application. |
Ultrafiltration, Nanofiltration, Microfiltration
Paul Cooley, PCA Global Watch Video (Login required) Full Abstract
The attempt to move aquarium design to better control turbidity, suspended solids, bacteria, algae, and nutrients can be contradictory to the goal of sustainability when coupled with traditional design practices. Current state-of-the-art advancements in life support system design could lead to a facility that is considered greener and more sustainable. Membrane treatment alternatives are currently available and include reverse osmosis, ultrafiltration, microfiltration, and nanofiltration depending on the filtration requirements. Pilot testing results of different systems demonstrates that there are advantages and disadvantages to membrane filters, but they can be used as supplemental filtration to more conventional systems. These membranes can augment treatment efficiency and reduce turnover rates, resulting in reduced energy consumption. |